/*
 * Copyright 2023 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 *
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.drools.drlonyaml.model;

import java.util.ArrayList;
import java.util.List;

import org.drools.drl.ast.descr.AndDescr;
import org.drools.drl.ast.descr.BaseDescr;
import org.drools.drl.ast.descr.ExistsDescr;
import org.drools.drl.ast.descr.NotDescr;
import org.drools.drl.ast.descr.PatternDescr;

public class Utils {
    private Utils() {
        // only static methods.
    }
    
    public static Base from(BaseDescr o) {
        if (o instanceof PatternDescr) {
            return Pattern.from((PatternDescr) o);
        } else if (o instanceof NotDescr) {
            return Not.from((NotDescr) o);
        } else if (o instanceof AndDescr) {
            return All.from((AndDescr) o);
        } else if (o instanceof ExistsDescr) {
            return Exists.from((ExistsDescr) o);
        } else {
            throw new UnsupportedOperationException("TODO: "+o);
        }
    }

    public static List<Base> from(List<BaseDescr> descrs) {
        List<Base> results = new ArrayList<>();
        for (Object item : descrs) {
            results.add(from((BaseDescr) item));
        }
        return results;
    }
}
